A circular shaped item with an aperture manufactured to predetermined dimensions and designed for use as a seal in stuffing boxes, packing nuts, and the like. It may be (1) any nonmetallic molded or formed ring (except solid (without joint) rings having a square or rectangular cross section); or (2) any shredded metal or metal foil type metallic or semimetallic rings. Excludes felt items but includes multimaterial items in which one of the materials is felt. For solid (without joints) nonmetallic items with a square or rectangular cross section, see washer (as modified) and gasket. For rubber items specifically designed for weather-proofing doors, windows, chests, and the like see seal, nonmetallic angle; seal, nonmetallic channel; and seal, nonmetallic, special shaped section. For circular (with aperature) nonmetallic items with a solid round cross-section see o-ring. Excludes cup, compression; gasket; washer (as modified); and felt, mechanical, preformed.
Classification: Gaskets,washers & other seals
NSN 5965-01-597-8749
NSN 5965-00-422-5415
NSN 7035-00-349-8571
NSN 5925-00-529-3950
NSN 6220-01-302-2214
NSN 5990-00-242-3754
NSN 6320-01-506-9439
NSN 5975-00-121-3589
NSN 5996-01-418-0677
NSN 6240-00-170-5302
NSN 6220-01-411-6542
NSN 6620-01-359-3920